Why is handler used in android

A Runnable object represents a piece of code or a command that can be executed. Generally it is used to execute some command in a different Thread. This is how a Runnable object would look like:.

A Handler in Android is a construct that can be used to communicate between UI thread and separate background threads. A Handler belongs to the thread that is creating it. For example, if you create a handler in the onCreate method of an Activity , it belongs to the UI thread, and this is usually what you want to do because you can then use this handler to post feedback to the UI thread from background threads. Handler provides us with various methods to execute or to queue the tasks. Main methods which are used as Follows:- post Runnable.

Following ways or methods are used to pass messages to Handler. Like this: Like Loading Next Recommended Reading. Windows 10 Vs Windows Visual Studio Vs Visual Studio Understanding Matplotlib With Examples. Understanding Numpy With Examples. C Evolution. Everything That Every. Understanding Pandas With Examples. Yes No. Any additional feedback? Skip Submit. A constructor used when creating managed representations of JNI objects; called by the runtime.

Handler Looper. Inherited from Object. The handle to the underlying Android instance. Creates and returns a copy of this Object. DispatchMessage Message. Dispose Boolean. Dump IPrinter, String. DumpAsync IPrinter, String. Equals Object. Compares this instance with the specified object and indicates if they are equal. Returns an integer hash code for this object.

GetMessageName Message. HandleMessage Message. HasMessages Int Check if there are any pending posts of messages with code 'what' in the message queue. HasMessages Int32, Object. Invoked when the garbage collector has detected that this instance is no longer reachable.